Chair



FIG. 1 is an upper perspective view of an chair;

FIG. 2 is a front view of the chair;

FIG. 3 is a rear view of the chair;

FIG. 4 is a left side view of the chair;

FIG. 5 is a right side view of the chair;

FIG. 6 is a top view of the chair; and,

FIG. 7 is a bottom view of the chair.

The broken lines shown in the figures depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for a chair, as shown and described. 